{"id":32,"date":"2026-10-20T10:00:00","date_gmt":"2026-10-20T06:30:00","guid":{"rendered":"https:\/\/sanatiblog.ir\/blog\/how-to-choose-a-temperature-controller\/"},"modified":"2026-10-20T10:00:00","modified_gmt":"2026-10-20T06:30:00","slug":"how-to-choose-a-temperature-controller","status":"publish","type":"post","link":"https:\/\/sanatiblog.ir\/fa\/blog\/how-to-choose-a-temperature-controller\/","title":{"rendered":"\u06a9\u0646\u062a\u0631\u0644\u0631 \u062f\u0645\u0627 \u0686\u0637\u0648\u0631 \u0627\u0646\u062a\u062e\u0627\u0628 \u06a9\u0646\u06cc\u0645\u061f"},"content":{"rendered":"<p>A temperature controller reads a sensor and switches a heater (or a cooler) to hold a set temperature. Before you call a seller, answer these five questions. They will ask you the same ones.<\/p>\n<h2>1. What sensor do you have?<\/h2>\n<p>Most controllers read a thermocouple (type K or J) or a PT100. Many models take both (&#8220;universal input&#8221;), but cheap ones often take only one. Check the sensor&#8217;s label or the old controller&#8217;s settings.<\/p>\n<h2>2. What does the output switch?<\/h2>\n<ul>\n<li><strong>Relay:<\/strong> for a contactor or a small load that switches a few times a minute.<\/li>\n<li><strong>SSR (voltage pulse):<\/strong> drives a solid-state relay. Best for heaters that switch often, because nothing wears out.<\/li>\n<li><strong>4\u201320 mA:<\/strong> for a power controller or a control valve.<\/li>\n<\/ul>\n<h2>3. On\/off or PID?<\/h2>\n<p>On\/off is fine when a few degrees up and down do not matter. For a steady temperature (plastics, food, ovens), choose PID with auto-tune: the controller learns your machine and stops overshooting.<\/p>\n<h2>4. What size is the hole in the panel?<\/h2>\n<p>Controllers come in standard panel sizes: 48\u00d748, 48\u00d796, 72\u00d772 and 96\u00d796 mm. Measure the cut-out before you buy, so the new one drops into the old hole.<\/p>\n<h2>5. What power and alarms do you need?<\/h2>\n<p>Most run on 100\u2013240 V AC; some need 24 V. If you need a warning lamp or a cut-off when it gets too hot, ask for an alarm output.<\/p>\n<p>Last tip: ask the seller if the unit is original and what warranty they give. Prices change with the dollar, so ask for the price on the day you buy.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0648\u0631\u0648\u062f\u06cc \u0633\u0646\u0633\u0648\u0631\u060c \u0646\u0648\u0639 \u062e\u0631\u0648\u062c\u06cc\u060c \u0631\u0648\u0634 \u06a9\u0646\u062a\u0631\u0644 \u0648 \u0627\u0646\u062f\u0627\u0632\u0647\u200c\u06cc \u067e\u0646\u0644\u060c \u0628\u0647 \u0632\u0628\u0627\u0646 \u0633\u0627\u062f\u0647.<\/p>\n","protected":false},"author":0,"featured_media":35,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-32","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/posts\/32","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/comments?post=32"}],"version-history":[{"count":0,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/posts\/32\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/media\/35"}],"wp:attachment":[{"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/media?parent=32"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/categories?post=32"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sanatiblog.ir\/fa\/wp-json\/wp\/v2\/tags?post=32"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}